@article{PAR00027173, title = {{I}ntercropping millet with {C}owpea {R}educes {P}ratylenchus abundance and improves land use efficiency in a low input {S}ub-{S}aharan cropping system}, author = {{M}bengue, {M}. and {T}all, {L}. and {D}iakhate, {S}. and {F}ounoune, {H}. and {D}iedhiou, {P}. {M}. and {D}iedhiou, {I}. and {T}rap, {J}ean and {C}ournac, {L}aurent and {C}lermont {D}auphin, {C}athy}, editor = {}, language = {{ENG}}, abstract = {{M}illet/cowpea intercropping is a promoted practice in {S}ub-{S}aharan agriculture. {H}owever, because cowpea is known as a host for plant-parasitic nematodes that may also infect millet, we examined whether intercropping may increase the risk of nematode-mediated millet damage, and if this risk may be controlled by organic amendments. {I}n twelve {S}enegalese farmers' fields which had been either non-manured or regularly manured over the past 10 years at least, we assessed the effects of intercropping millet and cowpea on the abundance of free-living and plant-parasitic nematodes, ecological indices, and land equivalent ratios ({LER}). {S}ix fields were manured, and six non-manured. {E}ach field included four plots: millet and cowpea as pure stands, and two plots with millet intercropped with cowpea sown at two densities. {S}oil nematofauna was evaluated before sowing and at cowpea flowering. {S}oil nematofauna was dominated by plant-parasitic nematodes. {B}efore manure application and crop sowing, regularly manured fields had higher structure indices of nematofauna than non-manured ones, and {P}ratylenchus was almost absent. {A}t crop flowering, abundance of {P}ratylenchus increased and was drastically higher in pure cowpea (149 individuals 100 g(-1) dry soil) than in intercropping and pure millet (18 and 17 individuals 100 g(-1) dry soil, respectively), regardless of the manuring regime. {M}anuring had significant positive effects on various bacterivorous families, on fungivorous and plant-parasitic trophic groups, but not on {P}ratylenchus. {M}illet and cowpea yields of manured fields were the highest, regardless of cropping pattern. {LER} averaged 1.7 and 1.5 in manured and non-manured intercropping, respectively. {R}egardless of the treatments, ecological indices indicated that the soil food web was undisturbed, with moderate enrichment, and suppressive against crop pests. {I}ntercropping millet with cowpea, even in poorly manured fields and with high cowpea density, constitutes an appropriate way to improve productivity without increasing {P}ratylenchus pressure in nutrient-poor soils of central {S}enegal.}, keywords = {{N}ematofauna ; {P}est regulation ; {Y}ield ; {P}lant diversity ; {M}anuring ; {A}groecology}, booktitle = {}, journal = {{J}ournal of {S}oil {S}cience and {P}lant {N}utrition}, volume = {{V}olume 24}, numero = {}, pages = {1448--1459}, ISSN = {0718-9508}, year = {2024}, DOI = {10.1007/s42729-024-01648-6}, URL = {https://www.documentation.ird.fr/hor/{PAR}00027173}, }